Bill Gates will guest star on 'Big Bang Theory'

Gates will find himself at the pharmaceutical company where Penny (Kaley Cuoco) works, but Sheldon (Jim Parsons), Leonard (Johnny Galecki), Raj (Kunal Nayyar) and Howard (Simon Helberg) fight to meet the Microsoft co-founder.

Gates previously appeared as himself in the television series Frasier in 2001.

"The Big Bang Theory" Season 11 is adding yet another real-life genius to its list of guest appearances.

The Big Bang Theory returns with new episodes starting Thursday, March 1 at 8/7c on CBS. Meanwhile, its spinoff series, Young Sheldon, has been renewed for a second season.

Alexander will play Mr. Lundy - Medford High School's resident drama teacher who "boldly shepherds" Sheldon (Iain Armitage) into the world of acting. CBS revealed on Tuesday that Bill Gates will make a guest appearance on an upcoming episode.

Alexander is mostly known for playing the role of George Costanza on Seinfeld for nine years.